Coin-controlled lock.



W. F. KUSTER.

COIN CONTROLLED LOOK. APPLICATION FILED MAY 31,1910.

Patented July 25, 1911.

2 SHEETS-SHEET 1.

JNVIENTOR. William F- Kuslr.

l'VfT/VESSES:

ATTORNEY.

OOLUMBIA PLANOOIAPH C0., WASHINGTON. n. c.

W. F. KUSTER. COIN CONTROLLED LOCK. APPLICATION IILED MAY 31.1916.

Patented July 25, 1911.

2 SHEETS-SHEET 2.

Fag4

JNVENTOR. William Kus e1".

3 4 4 3 0 3 5 I 7|1| 3 2 4 W 6 I :1... 6 2 A 1 3 5 m W h a0 H u do w w iO z M m I. h I v Ev 4 9 0 w 0 7 n 4/ w W Q m W ATTORNEY.

COLUMBIA PLANOORAPH CO" WASHINGTON. D. c.

* TED STATES PATENT ()FFICE.

WILLIAM F. KUSTER, 0F INDIANAPOLIS, INDIANA, ASSIGNOR TO HIRAM J.RAFFEN- SPERGER, OF INDIANAPOLIS, INDIANA.

COIN-CONTROLLED LOCK.

Specification of Letters Patent.

Patented July 25, 19.11.

To all whom it may concern:

Be it known that I, l/VILLIAM F. KUsTnR, of Indianapolis, county ofMarion, and State of Indiana, have invented a certain new and usefulCoin-Controlled Lock; and I do hereby declare that the following is afull, clear, and exact description thereof, reference being had to theaccompanying drawings.

The object of this invention is to provide an improved lock adapted tobe opened from the outside only upon the insertion of a disk or coin,and which can be opened from the inside and to provide also indicatingmeans for showing whether there is a person inside or not; to providepractical means in connection with the other construction for openingthe look from the outside by a janitors key, and means actuated by thecoin for disclosing the condition of the lock.

The nature of the invention will be understood from the accompanyingdrawings and the following description and claims.

In the drawings Figure 1 is a section through the lock just inside ofthe inside wall of the casing, showing the parts largely in elevationand in locked position. Fig. 2 is a section on the line 22 of Fig. 1,said section cutting through a portion of the door. Fig. 3 is an outsideelevation of a portion of the door and adjacent casing, parts of thedoor and casing being broken away. Fig. 4 shows the upper part of Fig. 1with the lock drawn inwardly by the use of a coin and the knob foropening the door. Fig. 5 is a similar section showing a part of whatappears in Fig. 4, the parts being in the position occupied by themafter the door has been opened from the outside and the bolt released soas to lock the door from outside entry. Fig. 6 is a section on the line66 of Fig. 1. Fig. 7 is the same as Fig. 5 showing the position of theparts when the lock is opened from the inside, the coin then escapingfrom the coin holder.

In this lock 10 is a front wall of the casing which is secured to thedoor 11, 12 is the rear wall of the casing, 13 the side wall of thecasing, through which the head 14 of the bolt 115 protrudes, and 15 isthe other side wall of the casing, through which the other end of thebolt operates.

16 is the knob, 17 the knob shaft, and 18 a plate on the door behind theknob.

The foregoing parts, excepting the bolt, may be made in any desiredform.

The bolt is an ofiset one, as shown in Fig. 1, the part having thebeveled head 14 being on a lower level than the other end of the bolt,the two ends of the bolt being in parallel planes with the intermediateconnecting portion being inclined. The front wall 10 of the two sidewalls 13 and 15 guide the bolt. The bolt is also guided by a pin or lug20 on the plate 10 and by a superimposed rack bar 21 which is held downon the bolt 115 by an overhanging lip 22 of a pin 23 which extends upfrom the plate 10 through the slot 241 in the rack bar 21. The outwardmovement of the bolt is limited by a lug 25 on the inner face of thehead 14 which comes in contact with the side wall 13 of the casing, andalso by the shoulder 26 coming in contact with the pin 23. The inwardmovement of the bolt is limited by the pin 27 on the plate 10, whichengages the rear surface of the inclined portion of the bolt.

The spring 28 tends to retract the bolt, it being connected at one endto a lug 29 on the bolt and at the other end to the side wall 15 of thecasing. The spring 30 acting on the lever 31 tends to hold the bolt inits outer position. Said lever 31 is crooked and between its ends isfulcrumed loosely on a shaft 32 which has bearings in the plates 10 and12 of the casing, see Fig. 2.

The knob shaft 17 carries a segmental gear 33 which meshes with the rackbar 21 and actuates it for opening the bolt through the intervention ofa disk or coin 34:. The coin is inserted through the slot 35 in the knobplate 18 on the outer side of the door, and it passes through a slottedconduit 36 downwardly through the door, and the slotted conduit 37within the casing of the lock and the coin is deposited by gravity onthe lug 20 between the rear end of the rack bar 21 and an elevatedportion or bolt 38 on the bolt 115. If the knob is turned when the coinis in this position, it is obvious that the knob will open the bolt asthe segmental gear 33 will push the rack bar 21 rearwardly and it willpush the coin against the shoulder 38 and thus move the bolt rearwardlyand unlock the bolt against the action of the spring 30'. The parts willthen be in the position shown in Fig. 4.

When the bolt has been forced rearwardly to the position shown in Fig. 4and the knob is released, the coin will drop down from the positionshown in said figure into the coin receiver 40 and will overbalance saidcoin receiver and move it from the position shown in Fig. 4 to theposition shown in Fig. 5, where the coin will lodge between saidreceiver and the tongue 41 punched in from the side wall 15 of thecasing. The coin receiver 40 is secured on the end of a lever 42, whichis pivoted between its ends on a pin 43 mounted in the plates 10 and 12of the casing. The coin receiver is normally overbalanced by the otherend of said lever 42 being weighted so that the weighted end will holdthe coin receiver up normally, as shown in Fig. 4, to receive the coinin the first instance. Then the coin drops into it, it overweights theweighted end of the lever 42 and moves the coin receiver down into theposition shown in Fig. 5, and the other end of the lever 42 movesupwardly until stopped by a pin 44 in a bar 45, which is likewisefulcrumed on the pin 43 and the other end of the bar 45 has a notch thatrests on the shaft 32. hen a coin drops down into the position shown inFig. 5, the spring 30 acting through the lever 31 throws the boltoutwardly so as to move it again into locking position, and the spring130 acting on the projection 133 extending oppositely from the segmentalgear 33, causes it and the rack 21 to return to their normal positions.The springs 30 and 130 are secured to the side 13 of the casing by bolt50, and the springs are held inwardly by a tongue 51 in the easing. Aperson then is on the inside of the door and no person can open the doorfrom the outside by the use of the knob alone, as there is no coin thenlying between the rack bar 21 and the shoulder 38 on the bolt 115.

When a person inside wishes to unlock the door, he operates the crank46, which is secured on the inner end of a shaft 32. That shaft carriesa segmental gear 47, which meshes with a rack bar 48 on the upper sideof the forward portion of the bolt 115. Therefore, by moving the lowerend of the crank 46 rearwardly to the position shown in Fig. 7, it willopen the door. The crank 46 has an inwardly extending finger 49, whichwhen moved to the position shown in Fig. 7 engages the lever 42 andpushes it upwardly from the position shown in Fig. 5 to the positionshown in Fig. 7 and that moves the coin receiver farther away from theplate or tongue 41, so that the coin can drop down into the lower partof the casing. When the crank 46 is released, the spring 30 will returnthe parts to their normal position.

If it be desired that the lock be opened by a janitor or any otherperson for any purpose by a key, a key-hole 52 is provided in the plate10 of the casing which is located in such position that it will engagethe spring 30 and release it from action against the lever 31 so thatthe spring 28 will throw the bolt and unlock the door.

The condition of the lock is indicated by the means shown in Fig. 3. Thecasing has a slot 54 and behind that slot the word Open is placed on theplate 55, which is secured to the door 11. On the pivot pin 43 asegmental fan-shaped plate 56 is pivoted On that plate the word Busy isprinted so that when it is moved in front of the slot 54 the word willappear, and it is in that position when the coin throws the coinreceiver down into the position shown in Fig. 5. The plate 56 returns tothe obscured posi tion indicated by dotted lines in Fig. 3 when thecrank 46 is released and the parts returned to the normal position.

I claim as my invention:

1. A lock including a casing with akeyhole therein, a bolt, a springwhich tends to withdraw and unlock the bolt, and another and strongerspring which tends to hold the bolt in the locked position and whichspring is located with reference to said key-hole so that a key insertedin said hole may engage said last-mentioned spring and prevent itsaction, whereby the first-mentioned spring will unlock the bolt.

2. A lock including a casing with a keyhole therein, a bolt, a springwhich tends to withdraw and unlock the bolt, a lever mounted so that oneend thereof engages said bolt, and another and stronger spring whichacts on said lever to actuate the same and cause it to hold the bolt inlooking position and which latter spring is so located with reference tosaid key-hole that a key inserted in said hole may engage saidlastmentioned spring and prevent its action, whereby the first-mentionedspring will unlock the bolt.

3. A lock including acasing, a bolt provided with a rack, a shaft, asegmental gear thereon which engages said rack for furnishing one meansof unlocking the bolt, a rack bar separate from said bolt and adaptedwhen operated to cause the unlocking movement of the bolt, a shaft, asegmental gear on said shaft for engaging said rack bar, and a springfor causing the return movement of said rack bar after it has beenoperated.

In witness whereof, I have hereunto affixed my signature in the presenceof the witnesses herein named.

WILLIAM F. KUSTER.

Witnesses:

Gr. H. BOINK, J. H. VVELLS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

